cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

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A054930 Number of complementary pairs of circulant digraphs on n nodes.

Original entry on oeis.org

1, 1, 2, 3, 4, 10, 8, 23, 27, 70, 56, 312, 180, 700, 1096, 2131, 2068, 11020, 7316, 34008, 44232, 104968, 95420, 531296, 419654, 1398500, 1864674, 5638352, 4794088, 33597760, 17896832
Offset: 1

Views

Author

N. J. A. Sloane, May 24 2000

Keywords

Links

Crossrefs

Cf. A049297, A049309, A054929.

Formula

Average of A049297 and A049309.
a(2*n) = A049297(2*n)/2; a(2*n-1) = (A049297(2*n-1) + A049309(n))/2. - Andrew Howroyd, Jan 16 2022

Extensions

a(12)-a(31) added by Andrew Howroyd, Jan 16 2022
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Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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